The Waterloo Police Department is requesting the publics assistance in locating a missing person who suffers from Alzheimers. Kathryn Kalianov, 99 years of age, was last seen at approximatley 11:00 PM on Thursday November 22nd 2012 at a residence in the 600 blk of Keystone St in Waterloo Iowa. Mrs Kalianov was discovered missing at approximatley 07:00 a.m. on Friday November 23rd 2012. Mrs Kalianov is a white female, 5-2, 110 lbs with white hair and last known wearing white pajamas. She left on foot and is unknown if she is wearing a coat or shoes. A search of the area is currently being conducted by law enforcement and Waterloo Fire Department personnel. If Mrs Kalianov is seen please contact the Waterloo Police Department via the Black Hawk Co Dispatch Center at 319-291-2515.